FOR:  LUNDIN MINING CORPORATION

TSX SYMBOL:  LUN

APRIL 12, 2005 - 03:18 ET

Proposed Merger of Lundin Mining Corporation and ARCON
International Resources P.l.c.

VANCOUVER, BRITISH COLUMBIA--(CCNMatthews - April 12, 2005) - NOT FOR
RELEASE, PUBLICATION OR DISTRIBUTION IN OR INTO, THE UNITED STATES,
AUSTRALIA, SOUTH AFRICA OR JAPAN.

Lundin Mining Corporation ("Lundin Mining" or the "Company")
(TSX:LUN)(Stockholmsborsen O-list:LUMI) is pleased to announce that
shareholders of ARCON Resources Plc. ("ARCON") holding 84.06% of the
outstanding shares of ARCON have accepted Lundin Mining's previously
announced merger offer and the offer has as result of this been declared
unconditional.

A copy of the formal announcement in this regard made in Ireland today
is attached with this press release.

Lundin Mining is pleased that it has been successful in adding the zinc
and lead production from ARCON's principal asset, the Galmoy mine in
Ireland to its existing production from the Zinkgruvan mine and the
Storliden mine in Sweden. This further highlights the Company's growth
strategy as a significant, low cost base metals producer with a focus in
Europe.

Lundin Mining will now start a development program to optimize
production from the Galmoy mine as well as an aggressive exploration
program in this highly prospective area in the county of Kilkenny in
Ireland.

"By merging with ARCON, Lundin Mining takes yet a major step towards
becoming one of the world's leading producers of zinc and we are happy
that the majority of the shareholders of ARCON accepted the offer. We
are now looking forward to develop the full potential of the Galmoy
mine", comments Mr. Lukas Lundin, chairman of Lundin Mining.

ON BEHALF OF THE BOARD

Edward F. Posey, President



NOT FOR RELEASE, PUBLICATION OR DISTRIBUTION IN OR INTO, THE UNITED
STATES, AUSTRALIA, SOUTH AFRICA OR JAPAN

12 April 2005

Recommended Merger Offer by Lundin Mining Corporation ("Lundin Mining")
for ARCON International Resources P.l.c. ("ARCON")

Merger Offer Unconditional in all respects, announcement of level of
acceptances and extension of Merger Offer

The Directors of Lundin Mining announce that all of the conditions of
the Merger Offer have now been satisfied or waived and, accordingly, the
Merger Offer has been declared unconditional in all respects. As at 3:00
p.m. (Dublin time), on Monday, 11 April 2005, the first closing date of
the Merger Offer, valid acceptances of the Merger Offer had been
received in respect of 146,216,319 ARCON Shares. This represents, in
aggregate, approximately 84.06 per cent of ARCON's current issued share
capital.

The Merger Offer has now been extended and will remain open for
acceptance until 3:00 p.m. (Dublin time), on Monday, 25 April 2005.

To ensure that ARCON Shareholders who have not yet accepted the Merger
Offer receive their proceeds of the Merger Offer at the earliest
possible date, they should complete and return the Form of Acceptance so
as to be received as soon as possible and by no later than 3:00 p.m.
(Dublin time), on Monday, 25 April 2005.

The consideration due under the Merger Offer in respect of acceptances
that have been received and are complete in all respects will be
dispatched on or before Monday, 25 April 2005, and within 14 days of
receipt in respect of further acceptances that are complete in all
respects.

The Offeror intends to procure that ARCON applies to the relevant
authorities for ARCON Shares to be delisted and to the Irish and London
Stock Exchanges for trading in ARCON Shares to be cancelled no earlier
than twenty business days from today and by no later than 12 May 2005.

The Offeror also intends to effect the compulsory acquisition procedures
provided for in Section 204 of the Companies Act, 1963 to acquire any
ARCON Shares in respect of which valid acceptances are not received
under the terms of the Merger Offer. Notices to non-accepting ARCON
Shareholders are expected to be posted by 25 April 2005.

Neither Lundin Mining nor any person deemed to be acting in concert with
Lundin Mining owned or controlled any ARCON Shares (or rights over such
shares) immediately before the commencement of the Offer Period or
during the Offer Period; and neither Lundin Mining nor any person deemed
to be acting in concert with Lundin Mining has acquired or agreed to
acquire ARCON Shares (or rights over such shares) during the Offer
Period.

The terms of the Merger Offer remain the same as set forth in the Offer
Document and related acceptance materials previously distributed to
ARCON Shareholders.

Terms used in this announcement have the same meaning as those contained
in the Offer Document.

/T/

For further information, contact:

Lundin Mining Corporation
Karl-Axel Waplan         +46 705 104 239
Sophia Shane             +1 604 689 7842

Macquarie Bank Limited
(Financial Adviser to Lundin Mining)
Richard Gannon          +44 20 7065 2173

ARCON International Resources P.l.c.
Peter Kidney             +353 1 667 3063
(Independent Director)
James McCarthy           +353 1 283 7144
(Director)

Davy Corporate Finance Limited
(Financial Adviser to the Independent Directors of ARCON)
Eugenee Mulhern          +353 1 679 6363

Murray Consultants
(Public relations adviser to ARCON)
Pauline McAlester        +353 1 498 0300

/T/

Macquarie Bank Limited, which is authorized and regulated in the United
Kingdom by the Financial Services Authority, is acting exclusively for
Lundin Mining and no one else in connection with the Merger Offer for
ARCON and will not be responsible to anyone other than Lundin Mining for
providing the protections afforded to clients of Macquarie Bank Limited
or for giving advice in relation to the Merger Offer, the contents of
this Announcement or any transaction or arrangement referred to herein.

Davy Corporate Finance Limited, which is regulated in Ireland by the
Irish Financial Services Regulatory Authority, is acting for the
Independent Directors and for no one else in relation to the matters
described in this Announcement and will not be responsible to anyone
other than the Independent Directors for providing the protections
afforded to clients of Davy Corporate Finance Limited or for giving
advice in relation to the matter referred to in this Announcement.

The Directors of Lundin Mining accept responsibility for the information
contained in this Announcement. To the best of the knowledge and belief
of the Directors of Lundin Mining, who have taken all reasonable care to
ensure that such is the case, the information contained in this
Announcement for which they accept responsibility is in accordance with
the facts and, does not omit anything likely to affect the import of
such information.

This Announcement does not constitute an offer or an invitation to
purchase or subscribe for any securities and does not constitute an
offer of Lundin Mining Securities.

Unless otherwise determined by Lundin Mining, the Merger Offer has not
been, and is not being, made directly or indirectly in, into or from
Australia, Japan, South Africa, the United States or any other
jurisdiction where it would be unlawful to do so, or by the use of the
mails, or by any means or instrumentality (including, without
limitation, telephonically or electronically) of interstate or foreign
commerce, or by any facility of a national securities exchange of
Australia, Japan, South Africa, the United States or any other
jurisdiction where it would be unlawful to do so, and the Merger Offer
is not capable of acceptance by any such means, instrumentality or
facility from within Australia, Japan, South Africa, the United States
or any jurisdiction where it would be unlawful to do so. Accordingly,
unless otherwise determined by Lundin Mining, neither copies of this
Announcement nor any other documents related to the Merger Offer are
being, or may be, mailed or otherwise distributed or sent in, into or
from Australia, Japan, South Africa, the United States or any other
jurisdiction where it would be unlawful to do so and persons receiving
such documents (including custodians, nominees and trustees) must not
distribute or send them in, into or from Australia, Japan, South Africa,
the United States or any other jurisdiction where it would be unlawful
to do so, as doing so may invalidate any purported acceptance of the
Merger Offer. Notwithstanding the foregoing restrictions, Lundin Mining
reserves the right to permit the Merger Offer to be accepted, if in its
sole discretion, it is satisfied that the transaction in question is
exempt from or not subject to the legislation or regulation giving rise
to the restrictions in question.

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